电子测试设备

泰克 7854 示波器,有曲線描繪儀及時域反射儀選配模組。下方的模組有電表计数器、舊的WWVB頻率標準接收器以及相位比較器、以及函数发生器

电子测试设备是用來產生訊號來測試被测器件(DUT),以及記錄被測器件的反應及相關資訊。電子測試設備可以用來證明被測器件可以正常運作,或是追蹤器件的一些問題。要開發電子系統,電子測試設備是其中重要的一環。

實務上的電子工程以及組裝需要許多不同種類的測試設備,從簡單且低價的設備(例如由燈泡及測試探棒組成的測試燈英语test light),到複雜的設備(例如自动测试设备)。 自动测试设备(ATE)中一般會包括許多實際以及模擬的設備(例如示波器電表)。

一般來言,電路及系統開發時,不論是在產品測試階段,或是在實務應用現場針對現有機種進行排错,都需要許多的測試設備。

測試設備的分類

基本設備

是德科技的商用數位電壓表來測試原型系統

以下是量測電壓、電流以及檢測電流元件的基本量測設備。

以下是一些產生訊號的設備:

Voltcraft M-3850可攜式万用表

以下是分析電路反應的設備:

連接上述設備:

進階或較少用的設備

量測儀表

採針

內建鉗形表的萬用表。按下方的大按鈕可以開啟鉗形表,可以架在導線上量測電流。

分析儀

產生信號的設備

Leader Instruments LSG-15 信号发生器

其他設備

平台

Keithley儀器的4200 CVU

目前有許多模組化的電子儀器平台,常用在建立自動化的電子測試和量測系統上。這些系統常用在進料檢測、品質保證,或是電子產品半成品或成品的生產測試。工業標準的通訊介面會連結信號源以及量測設備,設備可能是在機櫃系統,或是在機箱或大型機的系統,由外部電腦上執行的客製化軟體所控制。

平台的通訊介面有分為GPIB/IEEE-488LXI英语LAN_eXtensions_for_InstrumentationVXI英语VME eXtensions for InstrumentationPXI英语PCI eXtensions for Instrumentation、USB、RS-232等介面。

測試設備切換

在測試系統中加入高速的切換系統英语Automatic test switching可以在多個設備的測試時更快,更省成本,也可以減少錯誤以及成本。設計測試系統的切換組態需要瞭解要切換的設備,以及要進行的測試,也要知道切換設備的硬體資訊。

參考資料

  1. ^ Signal Injector Circuit. [2018-06-03]. (原始内容存档于2017-12-26). 

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